WAVES Flashcards
P WAVES
ATRIA DEPOLARIZES
QRS COMPLEX
VENTRICLES DEPOLARIZE AND LEAD VENTRICLES TO CONTRACTION
T WAVES
VENTRICULAS REPOLARIZE THAT WILL LEAD TO VENTRICLE RELAXATION
120/80 IS VENTRICLE SYSTOLE
LOWER CHAMBER CONTRACT
120 REPRESENTS _______ AND 80 REPRESNTS _______
SYSTOLE, DYOSTLE
HEART RATE GREATER THEN 100 IS ____________
TARCHYCARDIA
HEART RATE LOWER THEN 60 IS ____________
BRACYCARDIA
BIPOLAR LEADS
1) LA + RA - 2) LL+ RA- 3) LL+ LA -
UNIPOLAR OR MONOPOLAR OR AUGUMENTED LEADS
AVR,AVL,AVF
PRECORDIAL LEADS
V1 THRU V6
COLOR CODE FOR CHEST LEADS
RA WHITE, LA BLACK, RL GREEN, LL RED CHEST BROWN
PRECORDIAL LEADS COLOR CODE
V1 RED, V2 YELLOW, V3 GREEN, V4 BLUE, V5 ORANGE, V6 PURPLE
V1 4TH ICS ______
RIGHT SIDE OF STERNUM
V2 4TH ICS ______
LEFTSIDE STERNUM
V3 _____
MIDPOINT BTW V2 & V4
V4 5TH ICS _____
MIDCLAVICULAR LINE (MCL)
V5 5TH ICS _____
ANTERIOR AXILLARY LINE (AAL)
V6 5TH ICS ______
MID AXILLARY LINE (MAL)
VECTOR
ELECTRICAL IMPULSE HAS MAGNITUDE (VOLTAGE) MOVING IN A DIRECTION
INCREASES THE VOLTAGE OF ELECTRICAL IMPLUSES
AMPLIFER
WRITING PEN ON EKG MACHINE
STYLUS
The ________ is the point at which the QRS complex finishes and the ST segment begins.
J-point
The _________ connects the QRS complex and the T wave; it represents the period when the ventricles are depolarized.
ST segment
The ________ is measured from the beginning of the QRS complex to the end of the T wave.
QT interval
The ________ is measured from the beginning of the P wave to the beginning of the QRS complex. This interval reflects the time the electrical impulse takes to travel from the _____ through the ______
PR interval, sinus node & AV NODE
An EKG tracing is affected by patient motion. Some rhythmic motions (such as the shivering or tremors) can create the illusion of cardiac dysrhythmia.
Artifacts
TIME THAT IT TAKES ELECTRICAL IMPULSES TO TRAVEL FROM SA NODE TO AV NODE
PRI
CONTRACTION OF ATRIA P WAVE DEPOLARIZATION IS _______
PRI
NORMAL PRI
0.12 -0.20 SEC
